Apparatus for cleaning surfaces of bare wires



T. AKAHIRA APPARATUS FOR CLEANING SURFACE OF A BARE WIRE Original Filed Oct. 6, 1936 Patented Dec. 22, 1942 APPARATUS FOR. CLEANING SURFACES OF BARE WIRES Takeo Akahira, Takinogawa-ku, Tokyo, Japan; vested in the Alien Property Custodian Original application October 6, 1936, Serial No. 104,317. Divided and this application February 21, 1940, Serial No. 320,172.

2 Claims.

This invention is a division of an invention for which U. S. patent was applied for under Serial No. 104,317 of 1936.

In the manufacture of coated insulated wire, it has been found that most origins of the formation of bad insulation spots reside in the presence of dusts and powders of electric conductive material adhering to the surface of the wire. In carrying out the coating operation of the wire, therefore, apparatus is preferable for cleaning the surface of the wire before it is introduced into a bath of coating material for the purpose of minimising the formation of the bad spots. This invention proposes an effective apparatus for that purpose.

In the accompanying drawing:

Fig. 1 is a side view of the apparatus according to the invention, and

Fig. 2 is an end view thereof. 1

In Figures 1 and 2, w is a bare copper wire, I is a drum or reel therefor, and 2 is a die or grinder. 3 is a bath for coating material such as enamel, and 4 is a grooved coating roller rotatably mounted within said bath. The bare wire 5? is drawn from the reel I through the die 2, and is coated with enamel by means of the coating roller 4, and is then passed to a drying oven (not shown). Provided between the die 2 and the enamel bath 3 are cleaning bands 01, 02, ca and 04 each of which is made of soft material such as felt or soft rubber and the like and passes around respective rollers A1, A2, A3 and A4 in the direction at right angle to that of movement of the wire W and cleans the wire transversely. Said bands 01, c2, c3 and 04 are stored on drums D1, D2, D3 and D4 and unwound onto take-up drums E1, E2, E3 and E4 respectively. One or more of the bands may be preferably impregnated with a cleaning liquid in the bath h. In this apparatus, the whole breadth of each band touches the bare wire W, so that the most effective cleaning action can be achieved by utilising the whole breadth of each cleaning band.

In Japan July What I claim is:

1. In apparatus for manufacturing coated insulated wire fed into a coating bath, means for cleaning the surface of a bare wire prior to said coating bath, comprising a pair of opposed contact rollers arranged in the path of movement of said wire and mounted on respective aXes parallel to said wire, cleaning bands impregnated with cleaning liquid, looped aroundlsaid respective contact rollers and in contact with opposite sides of said wire, said rollers being composed of soft yieldable material whereby said cleaning bands embrace substantially the entire periphery of said wire, and wound-up and take-up means for moving each of said bands in a direction at right angles to the movement of said wire.

2. In apparatus for manufacturing coated insulated wire fed into a coating bath, means for cleaning the surface of a bare wire prior to said coating bath, comprising a pair of opposed contact rollers arranged in the path of movement of said wire and mounted in respective axes parallel to said wire, another pair of opposed contact rollers also arranged in the path of movement of said wire and mounted on respective axes parallel to said wire and further arranged in a plane at substantially right angles to the planes of the first mentioned contact rollers, cleaning bands impregnated with cleaning liquid looped about each opposed pair of contact rollers and in contact with opposite sides of said wire so that the opposite side surfaces and the opposite upper and lower surfaces of the bare wire are effectively contacted, said rollers being composed of soft yieldable material whereby each of said cleaning bands embraces substantially one-half of the entire peripher of said wire, and wound-up and take-up'means for moving each of said bands in a direction at right angles to the movement of said wire.

TAKEO AKAHIRA. 

